Finishing machine



w. HAMANN FINISHING MACHINE- 'May 6, 1930.

Original Filed July 27, 1927 4 Sheets-Sheet X l l I l May 6, 1930. w. HAMANN FINISHING MAcHgNE 4 Sheets-sheet 2 Original Filed July 27, 1.927

May 6, 1930. w. HAMANN FINISHING MACHINE Original Filed JulyV 2T, 192'? 4 Sheets-Sheet 3 May 6, 1930. w. HAMAN`N 1,757,188 FINISHING- MACHINE y Original Filed July 27, 1927 4 SheeS-Sheet 4 k A V/504 Md I im; I /se /A/l/EA/m/Q- Patented May 6, 1930 UNITED STATES PATENT o Fi-icE TTILLIAIVI HAMANN, OF IRONDEQUOI'I, OF VYORK, ASSIGNOR TO 'UNIAI'IED SHOE MA- GHlNERY CORPORATION, OF PATERSON, NEW JERSEY, A i CORPORATION OF NEW JERSEY Finisnrne ivrAc'H'INE v Application led July 27, 1927, Serial'No. 208,828. Renewed November, 1928..

l This invention relates to shoe-finishing machines and is herein illustrated as embodied in anfedge-setting machine designed for burnishing the edges of shoe soles. Edge-setting machines commonly comprise an oscillating rock shaft, the oscillations of which are transmitted to an edge-setting tool. Since the edge of asole has in the shank a contour distinctly different from the contour 1U of the edge of the sole around the forepart, it is customary to provide an edge-setting machine With two differently shaped burnishing tools, one for use in the shankandthe other for treating the forepart, these ltools 1;, being carried in a holder Which may be' re-V leased from the'rock shaft for rotation to carry eitherone'of the tools into operative position. In edge-setting machinesof the type disclosed in applications of Brice and 2o VHamann, Serial No. 598,837, filed-November 3, 1922, and of Ray, Serial No. 17,063, led

are provided for transformingtheoscillaf tions of the rockvshaft into rotational move- 2.3 ment of the tool holder tocarry the desired tool into operativeposition l upon actuation of manually operable means effective to break the driving connection through Which the tool holder is oscillated normally.

V- :so it is an object of this invention to provide an improvedl edge-setting machine of Vthe type referred to which Will be so organized that release of the tool holder for rotation to interchange the edge-setting tools `maybe ef- 3.3 fected vstill more rapidly, with a minimum'fof effort on the part ofthe operator, andWith 'out substantially disturbing the operators balance. v

' To this end, as herein illustrated in accordeu ance with the present invention, provision vis made for effecting the release of the tool holder of an edge-setting machine of theu type referred to by operator-controlled means effective both to release the tool holder and to is impart to it an initial rotary movementin the direction in which, the tool holder Will be carried by the rotation-imp`artng means, thereby providing for interchanging the tools very rapidly While at the same time making no disadvantageous demand upon lthe operators time and energy. As illustrated, upon movement of a manually operable lever, the tool holder is moved relatively to the rock shaft to separate complemental locking members on thetool holder and rock shaft respectively, thereby releasingthe tool holder for rotation and imparting to ity a movement around therock shaft in the direction in which it Willbe carried by the rotation-imparting. means softhatthe rotary toolfinterchanging movement is a continuation of the movement imparted by the unlocking means. Further to facilitate the t'oolfinterchanging mov-ement@J Wiperis preferablyprovided to Y clean, and Vif desiredto lubricat'e, the bearing Anotherfeature of the invention resides in ythe .provision of animproved mounting for tool heating means, illustrated `as an electric heating unit, to insure .such displacement of the heating unit. iftheloperator bumps the unit either With his hand orfwith the Work as Willminimize the danger ofinjury either to the operators hand orto-the'Work.

These and other features `of' the invention are set forth in the following description in` Fig. 3 isv a bottom VvievsTv looking 4upward towardV the underside ofV themechanism shown in Fig. 1, 'l p `Fig. 4 is a perspectivevievv of the tool n n Vsurface against which the tool holder turns. March 20, 1925, rotation-imparting means holder of another embodiment of the inven-y tion,

Fig. 5 is a detailed view showing a portion of the means for releasingthe tool holder in the embodiment shown in Fig. 4,

Fig. 6 is a side elevation, partly in sect-ion, of mechanism for imparting rotational movement to the tool holder of the embodiment shown in Fig. 4,

Fig. 7 is a detailed View showing a wiper for cleaning theflange or rim of Va khousing against which ian'ge thje tool holder rubs when rotated, n Fig. 8 is an exploded view of parts of the rotation-imparting mechanism' shown in Fig. 6,

Fig. 9 is a horizontal section through the mechanism shown in Fig. 6, taken yatthe airis of the shaft,VV 5 j Fig. 1 0 is a. vertical section on the line XX of Fig. 9,

Fia. 1l is a similar X12-5X1 of Fig. 9,

Fig. 12 is a sectional view similar to Fig. 11 with the part-s in different positions and the outer-casing removed, and

Fig. 13 is a detailed View showing a heating element for heating the tools in their lowest position.

Since the invention may be applied to various edge-setting machines the construction of which is vwell known, it has not been deemed necessary to illustrate the whole machine herein and consequently there is shown only the end of an oscillating rock shaft 10 which projectsoutwardly from a frame 12 of a machine which has mechanism for oscillating said shaft vat a high rate of speed in a fashion commonin such machines. Upon the outer end of this shaft is mounted a tool 'holder 14 having. oppositely projecting arms 15 and 17 which are recessed tofreceive toolsection on the 'line holding plungers 16 having-studs 18 forthe support of Vsole edge-burnishing tools, such as the forepart and shank burnishing tools 2O (Fig. 1) and21 (Fig.`4). These tool-holding plungers are mounted at an inclination to'facilitate the presentation ofthe soleof a shoe to the machine." Each plunger is urged outward toa limitdetermined by a locking strip 22by means of springs 24 so that the'tools may yield underthe pressure of the work. "A sleeve 26is interposed between lthe tool holder and the reduced hollow outerend 27V of the shaft 10 to minimizey friction and to reduce wear, the tool holder being" symmetrical with respect to the aXis of the rock shaft and balanced to reduce vibration to a minimum.

.The tool-holder 14 is held locked to'the shaft'so that it may oscillate therewith by `a spring 28, inserted in thehollow outer end of the shaft 10 andsecured'toa crossepin30 therein. This spring 28 is arranged tomove the tool holderaxially to 'bring intolodn ing engagement with the notched -rim'of a end of the shaft.

cup-shaped housing 32. The housing 32 isrmly secured to the shaft 10 by means of a cross-bar 34 and the rim around the openV outer end of the housing is turned outwardly to form a flange 36 which is recessed to provide oppositely disposed notchesa 38 having wear-resisting liners 40. VAt one slide of eachY j the tool-interchanging rotative movement ofV the tool holder 14. The projections 42 are arranged'to fit in the correspondingly shaped recesses 38-in the housing and in their original condition dofnot bottom in said recesses, thus leaving-,aclearance so that a tight lit vwill be maintained as the parts wear. It should'be noted that the meeting edges of the projections 42 and the liners 40 in the notches 38 are at right angles tothe plane of rotation of the tool holder 14 so that they will contact positively when, at the end of the rotation of the tool holder 14, said projections 42 slip oif the inclined surfaces 39 and enter the notches 38. f Y

For t-he connection of the outer end of the spring 28 to the tool holder 14, a hollow plug 44 is provided which is received in the outer end'ofthe sleeve 26 and which has a slot in p which rests a cross-bar 46 to which the spring is secured. The head of the block 44 rests against a Washer 48 which in turn rest-s on an anti-friction member in the form of a series 'of' balllbearings 50 heldin a suitable cageV and these rollv upon the surface of a hardened steel platef52-on the tool holder' 14. This are rangement allows the full force Vof the spring 'to bedirected against the tool holder thereby tending to effect axial movement of the holder with respect to the shaft without twisting the spring or causing any undue friction between th'e spring and the tool helder. At the same time. the spring is concealed and protected by beingreceived within the hollow To release Ythe tool holder 14 from locking engagement with the housing 32, it may be moved by means hereinafter descrillied, acting to push the tool holder axially against-the tension of the spring 28 and remove the wedge-shaped projections from the coacting notches. l

When a tool holder 14 mounted as above described with reference to the housing 32, is released Vfrom locking engagement with the housing and hence with the shaft by axial movement of the tool 4holder against Vthe tensionofthe spring 28, it may' be rotated manually toc'arry one tool out .of and the other'intooperative position although preferablyfand as "herein illustrated, it is irorac ' a sleeve 54 which is cut away atfits oppositel ing is notched at 84 morder not to inter-` Ray application to Which reference has been made above, comprises a one-Way clutch, one part 53,(Fig. 2) ofwvhichis secured tothe tool holder`14, While the cup-shaped housing 32 forms the other part. `To facilitate assembling the machine, certain parts of the one- VWay clutch are formed as an assembly shown in section in Figs. 1 and 2) which comprises sides to formtapered pockets for rolls. 56 Which constitute the moving'locking mem- Ybers of the one-Way clutch.; These rolls 56 are uro'ed into lockino` ositionfor enOa e- "1 v h i, h

ment with the machined'inner surface 58 of the cup-shapedk housing4 32 by means Vof springs 60 acting through plungers 62. The movingparts just described are held in the assembly by means of a surrounding band 64 slotted to permit the engagement Vof thev rollsy 56 with the inner periphery ofthe cupof the sleeve 54 and is held against rotation With respect thereto by means of a lip 66V which engages a corresponding recess in the sleeve. Adjacent to the inner periphery'of the sleeve and positioned as a chord thereof is a bar 68 which cooperates with a flattened facerZO of an inwardly projecting sleeve 72 upon the tool holder. An end'cover 7 4 is provided Which is held .by rivets 76 `to thefslceve 54 and holds in the assembly not only the moving rolls 56 and the spring parts but also the bar 68 and the band64 as Well. The parts just described constitute, therefore, an

assembly Which by reason of the cooperation of the bar shaft 68 With the flattenedface 70 of the tool holder sleeve 72 is s'lidablyengaged with the tool'holder 14 for rotation there# With and which at the same time may be inserted Within the hollow of the 'cup-shaped housing. The assembly is retained againstKV axial movement With'respect to said housing,a While rotating therein to ii'iterchangey the tools, by means of screw pins T8 held by lock Y Washers and arranged to entera narrow.V

groove 8O in the outer periphery of the sleeve 54. There is thus provided a self-contained mechanism Within and protected by the housing 82, by Whichthe power of the machine itself is utilized for interchanging theY tools,

the mechanism acting to transform the cumuV lative oscillations of the shaft to VVa rotary movement of the tool holder. Aicylindrical casing 82 is provided which may be bolted to the frame 12 of the machine'to surround and protectthe oscillating housing 32. This casfere VWiththe oscillating notched portion of the flange 36 ofthe'housing 32 (Fig. 8)

In order tor displacethe toolholder 14 aX-v its partialrotation under the actuation of the rotation#imparting means 51, contained Withinthecup-shaped housing 32V so as to effect a quick and ,easy interchange of the tools, there is 'provided an v.operator-controlled le- [ver 86 Whichis pinned to the llovver'end,Y

of an uprightl shaft 88 journaled in suitable' Y bearings uponthe casing82. The outer end of this 'lever may be provided With a suitableV strike platef90 (Fig. 4)y and its forkednear end 92 provides for the pivotal support'of a lroller 94. *TheV shaft 88 is extended upwardly to apoint above the notched housing 32 and provided with another lever arm 96 in the 'Y by reason ofthe inclination of theser surfaces Y and the action ofthe rollers 94 and 100 thereon, the actuation of the' lever 86 is effective notonly to move the tool holder out of locking engagement with the notches of the cup shaped housing 32 but also simultaneously to impart a rotative movement to it. Thus, as the outward'unlocking movement Ais effected, the tool holder 14 -is also turned, in thedirection in which' it will rotate under the action of the rotation-imparting means 51 already described, as ,soon asthe projectionsk 42 on thetool holderv are free from the notches 38 of the cup-shaped housing 32. The spring 28 VWhile moving the tool holder 14axially tends at the Sametime to cause the rollers 94 and 100 to find the/lowestpoints on the inclined sur` faces 102, considering the` rolling movement along the inclined surfaces as a movement downhill,thereby aiding and 4effecting rotational movement in the direction inWhich the tool holder Will be rotated under the action of the rotation-'imparting means 51. A

` spring104 (Figff) is attached to the lever 86 to .biasit to inoperative position and adf justablestops 106 and 108,7are provided-for limiting the range of movement of'said lever. Theinitial movement thus imparted by the tool holder releasing'meanswill' be imme diately continued bythe rotationsimparting means and the tool holder carried to its next succeeding position. i n

Heat may besupplied to the burnishing tools by radiation from electric'units 110 and 112 supported'upon the arms of bifurcated brackets 114 and 116. The upper bracket is rigidly attached vto the casing 82 by means of a hand screw stud 1,18 and the lower bracket 116 is supportedat the end of an arm 119 (Fig. 3) attached tofand extending horizontally from a sleeveV 120 which .surrounds an` other hand screw stud 122. The bracket 116 is carried at the'lovver end :of the plate 117 Tic a ci? upon AWhich there is mounted a stud 121 passj ing horizontally through a cylindricalopening at the end ofthe arm 119. The stud 121 is notched andy is engaged bythe reduced flat end of a plunger 124v (Fig. 13) pressed thereagainstby a spring 125, theftension of 4which replacinga tool, swing the heating unit sup-KVV portwaround the vertical axis of the screw lstud 122 -to an inoperativeposition and then return it to initial position when the tool has been replaced. Aspring member 133 (Fig. 1) serves to prevent'too free swinging movement Varound the screw stud 122. This meth-' odor supporting the lower unit l112 permits its yrotation around either an upright axis or a rhorizontal axis so that if the operator accidentally bumps vinto the unit either with his hand or with the work, theunit will be readily pushed aside without danger of injury to either one.,VV An attachment block 126 (Fig. 3)` is provided for the connection of a source of supply Vof electric current to the flexible leads 128 by meansiof which current is ltransmitted tothe heatingunits. It will be noted that'a shield 130 is provided adjacent tothe uppertool which shield is an extension of the bifurcated bracket 114 Vand servesnot only tok retain the heat supplied to the upper tool but also serves as a guard-to prevent accidentalcontact with said tool.

As also in the similar form shown in Fig. 4, the flange 36 at theouter rim of the cupshaped housing 32 forms a smooth surface upon which the inner ends Vof the wedgeshaped projections 42 ride. Since by reason of the action of the spring 28kupon the tool holder 14 there is a considerablepressure between the inner endsof these wedge-shaped projections and said i Hange it is Adesirable that the flange be cleaned and, preferably also lubricated, to reduce friction as much las possible. l./lccordingly, there is provided a wiper 132 (Fig. 7 supported in a holder V134 slid'- ablyl mounted in a casing v136 attached to' a lateral Vface of'one of the projecting tool car-,V

rier armsl 15 of the tool holderp'14 to' rotate therewith and, in so rotating, to clear the flange.l Inward `movementof this wiper 132 is limited by means of alstud l138 and nuts 140 as the wiper is pressedV against the flange 36 by means of a spring 142.v The wiper .is illustrated :as apiece of felt which serves to keep the flange 36 clean'from dirt and, il it is saturated with oil, to lubricate the same. It will be'understood'.that `the wiper 132 may be appliedv either to the embodiment shown in Figs. `1 toV 3 or to the embodiment about to be described which is shown in Figs.4 to

,Sand 81912.

Y The .embodiment of the invention which illustrated in Figs. 4 to 6 and Figs. 8 ,to 12 the hollowouter end 27 'of theshaft 10, and

that it is provided with wedge-shaped projections- 142 coacting with similarly shaped recesses144 having liners 146 set into the flange 148 of a housing 150 secured to the includes certain parts whichfare .substantialshaftlO. This housing 150 iscup-shaped ,Y

like .the housing 32 and contains a rotationimparting means 152 of the type shown in the lBrice and Hamann application to which reference has been made above. When the tool holder 14 is released Vbypressure on the lever 86 against a spring 97y (Fig. 4) to produce axial movementof saidholder to disengage i the v locking projections 142, it is rotated to interchange the tools by a spring 154 in which energy has been stored up through a one-way clutch by oscillation of the shaftr 10. This spring 154 (Fig.9) is connected at one end Y to a pin 156 yprojecting inwardly from-,the tool holder 1.4, and the other end Vof' the vspring is secured by a screw 158 (Fig. 11) inarecess ot'a ratchet wheel `160 constituting part of a one-.way clutch, the hub of said ratchet being swiveled on the sleeve 26 on the rock shaft 10. An advancing pawl 162 (Fig. 9) forming another part of said clutch is pivotedon a stud 164 (see also Fig. 11) in a slot vof the cup-shaped. housing V150 and vis normally pressed by aY spring 166 againstfthe teeth of the ratchet wheel. This pawl can be inter# mittentlybrought into engagement with the y ratchet teeth for brief intervals in orderto rotate the ratchet andenergize the spring or it may be renderedV temporarily ineffective,l bymechanism tobe described, whensuflicient energy has been stored up'in the-spring 154. A retaining pawl 168 is mounted on an ecl centric stud170 projecting "(Fig. 9) from the frame yof the machine, a spring 172 tending to hold the pawl always in engagement with the ratchet. Theeccentric mountingfprovides means, as the mechanism is assembled, for varying the position of the pawl so that itwill properly engage the teeth. Y The ratchetvwheel 160 has'a smooth bearingsleeve or flange 174` (Fig.v 8) extending' inwardly to'receive mechanism for rendering Athe advancing pawl ineective includinga swinging carrier 176 provided withV opposite pairs of guide anges 178 and180 at diametrisleeve 174 on the ratchet and is provided with' a projection and air opposing projection callyopposite points. v On' the rear of the carv i terminating in a cam 186, said projections b'e-V ing received between said anges A similar plate 188 having a projection 190 and an Y opposed projection terminating in a cam 192 is slidably mounted between the guide flanges 178 and 180 on the front of the 0 with the arm 198 on the slide plate 188.

Either of the cams 186 or 192 on the slide plates 182 and 188 (depending on the position of the parts) isV adapted to lift the advancing pawl 162, as later described, by engagement with an inwardly projecting roll 200 (Fig.

11) thereon. Stop lugs 202 `and 208 pro jecting from the rear side (Fig. 8) ofthe ratchet wheel 160 limit the relative rotational movement of the carrier 176 with respect to said ratchet in one direction, and similar stop lugs 204 and 206 limit the movement of the carrier in the opposite direction. The swinging carrier 176 with the two slide plates is normally kept at one limit of swinging movement, so that the cams rest against two opposite stop lugs on the ratchet, byY a spring 210' (Fig. 10) connected to the carrier 176 and to the ratchet wheel 160. Theslide plates and the carrier are held in assembled position between the ratchet wheel 160 and a'washer 212 (Fig. 9) abutting against the hubof the `cup-shaped member 150.

' The cams 186 and 192 are employed (alternately and successively) for the purpose'of raising the advancing pawl 162 Vfrom the teeth of the ratchet when the spring 154 is wound up. In the position shown in Fig.

11 the ratchet wheel is just beginning to aclvan'ce under control of the pawl 162 and the oscillating shaft'10 with which the pawl is connected. As the cam 192, for example, moves around, it contacts with a roll 214 (Fig. 11) mounted on the pivot 164 of the advancing pawl. This contact temporarily arrests the movement ofthe cam 192 and hence the swinging carrier 17 6,-the ratchet continuing to advance and the spring k210 stretching until the lug 202 reaches said carrier 176'. Thereafter as the cam 192 is moved aast the roll 214, contacting therewith, it is pushed inwardly so as to pass inside of said roll, the cam face causing the plate 188 to slide radially in its guides against the tension of the spring 194. As the cam passes the roll 214, it is suddenly pulled forwardly by the spring 210 against the stop lug l204 and outwardly by the spring 194 to engage the small roll 200 on the end of the advancing pawl 162 which is thereby raised suddenly from the teeth of the ratchet wheel by the percussive impact ofcam 192. This action prevents any further rotation of the rachet wheel or further winding of thespring 154.

It should be noted that opposite portions ofV the periphery of the ratchet wheel have the i teeth interrupted for ashort distance, thusV insuring the,y stopping of the ratchet wheel after one halfa revolution if for any reason the pawl tripping mechanism fails to operate. j The ratchet wheel carries two opposite outwardly proj ecting stops 216 and 218 which lie in the same circle as the pin 156vpro-ject ing inwardly from the tool holder 14. After the parts have reached the position shown inpFig. 12, where the advancing pawl is shown out of engagement with the ratchet wheel, the tool holder may be released to interchange the tools. holder, carrying the pin 156 which projects inwardly from it, is caused to rotate clockwise (as viewed in Fig.V 12) by the spring v154 until the'pin 156 engages the stop216 on the ratchet, or the unwound spring pulls `the ratchet wheel along forwardly to carry the" cam 192 slightly ahead of and clear of the` advancing pawl`162, which is thereby allowed to return again into engagement with the ratchet teeth to wind up the spring again in, preparation fora subsequent interchange ofH tools.` On the neXtinterchange of tools, the

corrcsponding cam 186 and associated'parts `operatein a similar manner. Another mechanism is thus provided actv Thereupon, the toolv wheel 160 by the screw 158. This ratchet wheel 160, whichis held against reverse rotation-by means of a retaining pawl 168 secured to the frame of the machine, isV forwardly rotated intermittently,y using the powerof the machine itself, by means of the advancing pawl 162, which is secured to the rockshaft 10 by being mounted on the cup-shaped housing 150. The oscillations ofthe rock shaft cause the advancing pawl to move the ratchet f wheel 160 along step by step until suiicient energy has been stored up in the spring 154 to effect a partialrotation of the tool carrier to interchange the tools. Inasmuch as the period of time required for this winding up of the spring will probably never exactly coinl eide with the period Vbetween the interchange of tools, mechanism has been provided, as above described, for renderingthe advancing pawl 162 ineffective after the spring has been wound up until such a time as the toolholder has Vbeen given a partial rotation. This mechanism comprises the carrier 176, associa-ted with which are two cam plates 182 and 188. These cam plates are normally springpressed outwardly by a spring 194, and their cam projections 186 and 192 lie between projections on the ratchet Wheel, being in the carrier 176 Awhichis held against the projections 204 and 206, as shown in Fig. 10, by a spring 210. As vthe ratchet wheel is advanced step by step, the `cam 192, for example, will be brought into contact with l.the roller 214 occupying a lixed position in the machine. This `engagement will temporarily retard forward movement of the cams and their carrier until the abutment 202 on the ratchet wheel contacts with the back face of the guide flange 178 of the carrier 176 and forces the cam 192 past the roller 214. When this happens, the cam 192 will be depressed inwardly against the tension of the spring 194, and as it passes beyond the roller 214, the cam plate will be forced outwardly suddenly to raise the advancing vpawl 162 from engagementV with the teeth of the ratchet wheel.V As the machine is operated, the arrangement thus far described will store up energy in the spring 154, so that when the releasing lever 86 is depressed by the operator, the tool Iholder will be carried around to bring the next tool into operative position. As the tool holder flies around, the unwound spring 154 will tend to drag the ratchet wheel and the cams along, to bring the cam 192 out of contact with the 'roller 200 on the ad- Y vancing pawl 162, thus allowing this pawl to return into engagement with the ratchet wheel so that energy may be again stored up in the spring for the next interchange ofV` tools. If the cam projection has not been moved in this fashion, then the pin 156 (Fig.

11)'projecting inwardly from the back side of the tool holder will.engage an outwardly Y projecting stop 216 or 218 on the ratchet wheel andcarry the ratchet wheelaround the shaft to push the cam projection 192 past the kadvancing pawl 162. There `is thus provided a self-contained mechanism associatedv withV the tool holder and concealed within the cupshaped housing 150, which rotates'about the Y axis of oscillation, and in the operation of which the tool holder is rotated by the power of the machineitself, the mechanism operat` ing to transform the cumulative oscillating movements of the shaft 10 to a. rotary movement of the tool `holder or carrier 14.

Surrounding the housing 150 and secured to the main frame 12 is anauxiliaryfcasingv 220 (Figs. 4, 9 and 11) withupper and lower flat guide faces 222 (Fig. 11) for slides 224 (Fig. 4) guided and held in place by cover plates 226. On the VslidesV 224 are mounted outwardly extending brackets 228 carrying electric heating units and 112. The heating units lie parallel to the edge setting ironsl and out of contact therewith to heat them by radiation. yTo vary the degree Vof heat, the units can be moved toward or from the edge irons by levers 230 (Fig. 3) pivoted on aboss 282 on the auxiliary casing and loosely embracing pivot studs 234 (Fig. 4) projecting from'the slides 224. To hold the slides frictionally in any position, springs are interposed between the levers and nuts on the ends of the pivot studs 234.

In the operat-ion of either illustrated emf bodiment of the invention, the operator, whenever he desires to interchange the tools, will press against thestiike plate 90 to actuate the lever 86'and will thereby cause axial movement of the tool holder to release its locking projections from Athe shaft. .This movement .will be accompanied by an initial rotational movement of the tool holder, as

the latter is freed fromI the sliaft,which moveand without disturbing the operators balance or distracting his attention.

Having described the invention, what I claim as new and desire to secure by Letters Patent of the United States is 4 a 1. A shoe finishing machine having, in combination, anoscillating rock shaft, a tool holder connectedrto the shaft to oscillate therewith, said tool holder being rotatably mounted on the shaft but normally held against rotating movement yrelatively to the shaft, means'for releasing said tool holder for rotating movement relatively to the shaft, said last-named means being constructed and arranged to impart to the tool holder an initial rotary movement relatively to the shaft, and means forimparting to the tool holder a further rotary movement relatively to the shaft when .the toolholder is released forfsuch movement.

2. A shoe finishing machine having, in combination, an voscillating rock shaft, a tool holder connected to the shaft to oscillate therewith, said tool holder being rotatably mounted onf the shaft butnormally held against rotating movement-relatively to the` shaft, rotation imparting means for effecting rotating movement of` the tool holder` relatively to the shaft in a given direction Vwhen the tool holder is released for such movemenhand meansV for releasing thc tool holder for rotating movement relatively to inay the shaft constructed and arranged to impart` to the tool holder an initial rotary movement in the direction in which the tool holder will be carried by said rotation imparting means.

3. A' shoe finishing machine having, in

combination, an oscillating roch shaft, a tool holder connected tothe shaft to oscillate therewith, said tool holder being rotatably mounted on the shaft but normally held against rotating movement relatively to the shaft, a pair of linisliing tools carried by said holder, rotation imparting means for effecting rotating movement of the tool holder relatively to the shaft in a given direction to interchange the'tools when the tool holder therewith, said toolholder being rotatably.

mounted on the shaft but normally held against rotating movement relatively to the shaft, shank and Vforepart edge-setting tools carried by said holder, means for releasing said tool holder for rotating movement relatively to the shaft to interchange said tools, said last-named means being constructed and arranged to impart to the toolfholder an initial rotary movement relatively to the shaft, and means for continuing said rotary movement of ythe tool holder to complete a tool interchanging movement. Y

5. In a shoe finishing machine, an oscillating rock shaft, a tool holder carrying a plurality of differently shaped tools rotatably mounted on said rock shaft and normally locked to theshaft foroscillation therewith as a shoe is presented to that one of the tools that is in operative position, means for releasing the tool holderfor rotary movement relatively to the rock shaft constructed and arranged to impart to the tool holder an init-al 'rotary movement relatively to the shaft, rotation imparting means energized by the rock shaft and constructed and arranged to continue the rotary movement 4of` the tool holder initiated by said releasingl means to bring a succeeding tool intooperative position, and means for locking the tool holder on the-shaft in that position.

6. In a shoe finishing machine, an oscillating rock shaft, a tool holder for a plurality of tools rotatably mounted upon said shaft,

said tool holder having a lbearing surfaceV inclined to the axis of the shaft, a spring for urging said tool holder axially to lock it to y the shaft, means for displacing said tool holder axially against the tension of said spring to release it for rotary movement rel-A atively to the shaft, said means comprising a Vroller arranged to bear against said inclined bearing surface, whereby the energy of the spring tending to vbring the roller to the bottom of the incline on the tool `holder im-` parts to the tool holder an initial rotational movement, and means for imparting a further rotary movement to the tool'holderivith rel of tools rotatably mounted upon said shaft,

a spring for urging said tool holder axially to lock it to the shaft, means for displacing Vsaid tool holder axially against the tension of said spring to release it from the shaft for rotary movement relatively to the shaft, said means'being Vconstructed and arranged to impart to the tool holder an initial rotary movement by reason of the combined action of the displacing means as it presses against Vthe tool holder and theaction of the spring opposing 4said displacing. means, and means for imparting a further rotary movement to the. tool holder With respectto the shaft to interchange the to-ols. Y

8. In a shoe finishing machine, an oscillat,`

ing rock shaft, a tool holder for a plurality' of tools rotatably mounted upon said shaft, means for urging said tool holder axially to lock -it tothe shaft, means for moving sald tool holder axially to release it from the shaft` constructed and arranged to impart an initial, rotational movement to the toolholder, and means forl imparting a further rotary movement to the tool holder around the shaft y When it is released therefrom.

mounted on said shaft and connected to the shaft to oscillate therewith, said tool holder having a bearing surface inclined tothe axis' of the shaft, means for releasing said tool holder for rotational movement relatively to the shaft, said means comprising a roller arranged to bear against theinclined bearing` surface on the tool holder thereby to impart an initial lrotational movement to the tool holder `as it releases the same, and means forimparting rotational movement to the tool holder relatively to the shaftV When the tool holder is'released for Vsuch movement.

l0.` In a` shoe finishing machine, an oscillating rock shaft, a tool holder rotatably mounted on said rock shaft, a notched member secured to said rock shaft, means for resiliently holding said tool holder in engagement With said notched member thereby to secure the tool holder tothe rock shaft, and means for releasing said tool holder from engagement With said notched member com prising a lever and an inclined surface constructed and arranged to impart an initial rotational movement to the tool holder as it is released from engagement with the notched member. Y

11.` In a shoe finishing machine, an oscillating rock shaft, a cup-shaped housing secured to said rock shaft and having its rim formed to provide a flange in which there is a notch, a holder for a'plurality of tools rotatably mounted on the rock shaft and provided vvith a Wedge-shaped projection adaptedto enter said notch, means for holding said tool holder in engagement With the notch of said housing comprising a spring and an A the housing on said shaft.

anti-friction member secured to saidspring and bearing against said tool holder, and means for disengaging said tool holder from saidV notched housing against the tension of said spring.

12. In a shoe finishingfmachine, an oscillating rock shaft, a cup-shaped housing secured to said rock shaft and forming one of the members of a one-way clutch, a sleeve within said housing forming another' member of said one-way clutch, a tool holder rotatably m-ounted on said rock shaft and movable axially on the shaft to engage said housing or to release the holder from theV housing7 said tool holder being s'lidably engaged with but locked to the sleeve within said housing so that said sleeve rotates with the tool holder, and gripping members interposed between said sleeveand the inner surface of said housing.

13. In a shoe finishing machine in which a tool holder is rotatably mounted upon the end of an oscillating rock shaft and movable axially thereof and which has a housing. provided withy rotation imparting mechanism comprising a one-way clutch, an assembly forming oneof the parts of said clutch and adapted to be held against axial movement in the housing, said assembly comprising locking members for the clutch, a sleeve cut away to receive the movable locking members, a bar extending along a chord of said sleeve slidably to connect said assemblywith the tool holder to rotate therewith, and means for retaining said locking members and said bar in said assembly so thatthe latter may be inserted as a unit into 14. In a shoe finishing machine, an oscillating rock shaft, a cup-shaped housing secured to said rock shaft and provided withVV a flange around its rim, a tool holder rotatably mounted on said rock shaft and detachablyinterlocked with said housing, means 'for ,resiliently holding said tool holder against said housing, means ,for releasing said tool from engagement `with the housing, means upon the' tool holder constructed and arranged to kclean andlubricate said'lange thereby to facilitate the rotation of the tool holder, and means for imparting a rotational movement to theV tool holder after it has been `released from the housing. se

15. In an edgesetting machine, a rock shaft, au oscillating setting tool on said rock shaft, an electric device for heating said tool by radiation, and means for pivotally sup- `porting said device adjacent to said tool, said means being constructed and arranged to allow the heating deviceto be displaced around an upright axis. l u

16. A shoe finishing machine having, in

combination, an oscillating rock shaft, a tool holding member normally connected to the iockshaft to oscillate therewith andcarryiiig a plurality of differently shaped tools, and means for releasing the tool holder from the rock shaft to permit interchanging tools including an operator-controlled member adapted to be brought into engagement with said tool holding member to displace the same, one of said engaging members having an inclined surface whereby the pressure of the operator-controlled member against the tool holding member-imparts an initial movement to the latter member tending to bring another tool into operative position.

17. A` shoe finishing machine having, in combination, an oscillating rock shaft, a tool holder carrying a plurality of di'erently shaped tools rotatably'mounted on said rock' shaft to permit bringing said tools successively into operative position, means for locking v the tool holder to the shaft for oscillation therewith, and operator-controlled means constructedfand arranged simultaneously to unlock the tool holder and to impart rotative movement thereto. Y

18. A shoe finishing machine having, in combination, an oscillating rock shaft, a flanged member mounted on said rock shaft, a tool holder carrying a plurality of differently Vshaped tools mounted to rotate about said rock shaft, interlocking means between the flanged member and the tool holder to hold the tool holder for oscillation with the rock shaft, resilient means urging said tool holder axially into locking engagement with,

the flanged member, and operator-controlled means for displacing said tool holder out of locking engagement with the flanged member,

said operator-controlled means being constructed and arranged to impart a rotational Y movement to the tool holder relatively to the flanged member.

19. A shoe finishing machine having, in'

combination, an oscillating rock shaft, a tool holderrrotatably mounted on said rock shaft, ay member secured to said rock shaft having a flangedportion extending around the rock shaft and provided with a plurality ofrecesses, resilient means urging the tool holder axially of the rock shaft to draw it into inter# holder mounted Vfor rotation about said rock Y shaft, and means, including a spring, a member having an inclined surface and an operator-controlled device movable in opposition` holder carrying a plurality of dierentlyshaped tools mounted on said shaft for rota- Vtion about the axis of said rook shaft and adapted to be secured thereto for oscillation with the shaft, a spring urging said tool holder axially into interlocked engagement With the shaft, and means for imparting a rotational movementtosaid tool holder oomprising an operator-controlled device and a member having an inclined surface. Y

In testimony whereof I have signed my name to this specieation. 1

WILLIAM HAMANN. Y

tidY 

